ML19308D379

RO-77-46:on 770514,hydraulic Snubber MUH-44 Found Inoperable.Caused by Missing Cotter pin.MUH-44 Renewed W/ Functionally Tested Spare Snubber & SP-201 Revealed Other Snubbers Operable

ML19308D379
Person / Time
Site:	Crystal River
Issue date:	06/03/1977
From:	Stewart W FLORIDA POWER CORP.
To:
Shared Package
ML19308D371	List: ML19308D370 ML19308D379
References
NUDOCS 8002270830
Download: ML19308D379 (2)

Text

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LICENSEE EVEN f RI-F lT

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I [PLEASE PRINT AU. REQUIRED INFORT.1 AT:CL N_/ NAME LCENSE NUMOEA TYPE

{7 l09Fl Ll Cl Rl Pl 3l l0l0l-l0l0l0l0l0l_l0l0l4j lj 1l1l1l1l l0l3l 14 13 25 2ti 30 31 32 CAftConY " rN sY$ uoCRET NUMOEA EVENT CATE AEPCnr care h CON'T l _ l _ l 7 u 57' QJ l1l l 0l 5l 0l-l 0l 3l 0l 2l (0 l5 l 1l 4l 7l 7l l0l6l0j3l7l7 ,

bu bil 60 b) 66 69 74 7b u EVENT OtSCnt!

g l La flode 5,'il0N Cold Shutdown, in the process of performing the llydraulic Snubber Inspection 7 09 03 l SP-201, liydraulic Snubber MUH-44, located on 2-1/2" H.P. injection line in the Reactor 7 89 3-g l Bldg. , was discovered inoperable contrary to Technical specification 3.7.9.1.

7 89 a Q l Redundancy N/A. First occurrence of this type. MUH-44wasrenewedwithafunctionally'\

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O5 l tested spare and restored operabia within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />. (LER 77-46) l 7 8 ,9 Paua 6' SYSitM CAUSE COMRJNENT COMPONENT C00E CCCE COMPONENT Co0E SUP8UEA MANuFaCTuf4A VOLATCN .

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7 89 10 11 12 17 43 44 47 48 q CAUSE DESCRIPTION O q l The cotter pin that connects the snubber eye to the pipe clamp was missing due to j 7 09 00 l conditions unknown at this time. l 09 , SG I I 89 FACAi1Y METHCo CF status  % POWEA OTHER STATUS DISCOVERY DISCOVERY DESCA#TCN 1

lC l l 0l 0l 0l l N/A l lB l l N/A l 7 0 9 10 12 13 44 45 46 80 ACTm TY CosfENT AELEASEO AMOUNT OF ACTMTV LCCATCN OF AELEASE I

7 8 9 d b oFAELEASEl 10 11 N/A l 44 45 l N/A 80 l

PERSGNNEL EXPOSURES NUM8EA fvpt OESCR@ TON 113 l 0l 0l 0l lZl l N/A

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7 89 11 12 13 60 PERSONNEL INJURIES NuMOER DESCMGTON DE l 0l 0l 0l l N/A l 7 89 11 12 60 OFFSITE CONSEQUENCES 3 l N/A -

l 7 09 00 LOSS OR OAMAGE TO FAC:UTY  !

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/ )' W PusuCITY N/A 17 l A O rr Q' .l 7 00 '

L"I AOCITIONAL FACTORS gl See attached supplementary information ,

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.*r_ W. P. Stewart

,0 ,,,,,,,, (811) 866-4159

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SUPPLEMENTARY INFORMATION ss_s *

1. Report No.: 50-302/77-46

2. Facility: Crystal River Unit #3

3. Report Date: 3 June 1977

4. Occurrence Date: 14 May 1977

5. Identification of occurrence:

Hydraulic Snubber MUH-44 inoperable contrary to Table 3.7-3 of Technical Specification 3. 7.9.1.

6. Conditions Prior to Occurrence:

In Mode 5, Cold Shutdown, performing SP-201.

7. Description of Occurrence: ,

o At 1400, in the process of performing the Hydraulic Snubber Inspection  ;'

SP-201, Snubber MUC-44, located on the 2-1/2" H.P. injection line in the Reactor Building, was discovered disconnected from the snubber eye to the pipe clamp. The snubber ss removed and renewed with a functionally tested spare. MUH-44 was restored operable within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />.

8. Designation of Apparent Cause of Occurrence:

The cocter pin that connects the snubber eye to the pipe clamp was missing. The reason for the missing cotter pin is unknown at this time.

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9. Analysis' of Occurrence:

There were no safety implications to the plant or public other than the loss of pipe restraint capabilities of MUH-44.

10. Corrective Action:

MUH-44 was renewed with a functionally tested spara snubber and SP-201 i

revealed other _ snubbers operable.

11. Failure Data:

This was the first occurrence of this type.

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